Wapiti Meadows Attachment A.pdf

PDF 246 KB Posted Jan 14, 2025

Attached to: Wapiti Meadows Open Space Irrigation Pipeline
Solicitation number: 015.25
Issued by: Pitkin County, Colorado

About this file

Written by GovTribe AI · Apr 17, 2025

This document is a detailed engineering drawing and technical specification for a Screen Box for Diversion Box No. 10A on the Salvation Ditch, prepared by Sopris Engineering LLC located in Carbondale, Colorado. The drawing provides comprehensive fabrication and installation guidelines for a sophisticated water management infrastructure component, including specific technical requirements for the screen box's construction, material specifications, pipe connections, and site preparation. The design includes precise instructions for steel fabrication, pipe connections, drainage configurations, and installation methodologies, with detailed notes on wall thickness, welding standards, pipe fitting requirements, and site preparation protocols.

The technical specifications outline exacting requirements for the screen box, including a 304-Stainless Steel removable perforated plate screen with 3/8" diameter perforations providing a minimum 50% open area, lifting handles, and the ability to support a 20-pound per square foot debris load. Installation guidelines mandate specific site conditions, including clearing vegetation, verifying pipe elevations, moisture-treating and compacting the site, using screened rock or Class 6 Aggregate Base Course for pipe bedding, and using native soils for backfill. The document also includes specifications for a staff gauge, weir fabrication, and precise pipe slope and extension requirements, indicating a highly engineered approach to water infrastructure design.

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Other files

File	Type	Posted
Attachment B - Sample Contract.pdf	PDF	Jan 14, 2025
RFP 015.25 - Wapiti Meadows Irrigation.pdf	PDF	Jan 14, 2025
Base Drawing-PLAN.pdf	PDF	Jan 14, 2025
Base Drawing-PROFILE.pdf	PDF	Jan 14, 2025

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EXISTIN

G SPLITTER BO

X 10A

(PLAN

VIEW

, N

.T.S)

SLO

PES

DRAIN PIPE

SLO

PES

DRAIN PIPE

EEN

X FO

IVER

SIO

X 10A

AL N

TES - FABR

ATIO

1. Steel fabricator to supply shop draw ings for review by design engineer.

2. The finished box w ill be only filled w ith w ater to approxim ately 1-foot below the top of the box.

3. The finished box w ill be surrounded by com pacted earth on three sides to approxim ately 1-foot below the top of the box. The fourth side of the box w ill have com pacted earth to approxim ately 2-feet below the top of the box.

4. M inim um w all thickness shall be 3/16-inch.

5.All sheet-m etal w elds shall be w ater-tight. R einforcing angles, bar stock, etc. need not be w ater-tight.

6.Pipe C onnections into and out of the Box:

a.N ote 1 - SU

PPLY PIPE M

ay have either a Bulkhead Fitting O R a Starter C oupling for 8-inch nom inal SD R

-26 PVC

. This m ay be w elded in place or bolted to the sheet m etal. Fitting shall have a bell joint w ith gasket for the 8-inch SD R

-26 PVC

b.N ote 2 - D

AIN

PIPE M

ay have either a Bulkhead Fitting O

R a Starter C oupling for the 6-inch nom inal Schedule 40 PVC

. This m ay be w elded in place, or bolted to the sheet m etal. Fitting shall have a bell joint w ith gasket for the 6-inch Schedule 40 PVC c.N ote 3 - D

ISC

E PIPE M

ay have either a Bulkhead Fitting O R a Starter C oupling for the 8-inch nom inal Schedule 40 PVC

The choice should be based on w hichever fitting allow s the drain line to be connected to the low est point in the bottom of the box.

7.O ther N um bered N otes:

a.N ote 4 - D R

AIN

U TLET The 6-inch D rain Pipe shall be set at the m axim um slope possible, to facilitate sand rem oval. The outlet for the 6-inch D rain Pipe shall extend a m inim um of 2-feet out from the slope below the Screen Box. The outlet shall be fitted w ith a 6-inch Sch. 40 PVC

M ale-threaded Pipe Adapter, glued to the O utlet Pipe. The outlet shall be capped w ith a 6-inch Sch. 40 PVC

Fem ale-threaded C ap.

b.N ote 5 - D

ISC

G E PIPE The 8-inch D ischarge Pipe shall be set at a m inim um slope of 4%

, and shall extend a m inim um of

2-feet out from the slope below the Screen Box. The D ischarge Pipe shall be fitted w ith a G

8-inch Sch. 40, 45° Street

Elbow , w hich shall be G

into an 8-inch Sch. 40, 45° W

YE. The W YE shall be oriented w ith its line-fittings perpendicular to the 8-inch D ischarge Pipe. The N ortherly end of the 8-inch W

YE shall be fitted w ith a 8-inch Sch. 40 PVC

M ale-threaded Pipe

Adapter, glued to the into the W YE. The outlet shall be capped w ith a 8-inch Sch. 40 PVC Fem ale-threaded C ap.

8. The W

EIR

show n on the draw ings shall be fabricated to the dim ensions show n, w ith all cut edges sm ooth and perpendicular to the sheet m etal.

9. The Staff G auge show n on the draw ings shall be a W aterM ark Style “C ” Stream

G auge, graduated in Feet, tenths, and hundredths, and be 1.56-feet long. (M odel N um ber 3970, U

#: 0758182224515, available from

Forestry Suppliers).

10. The Staff G auge shall be m ounted such that the 0-foot m ark is level w ith the bottom of the slot in the W

EIR

plate.

11.The R em ovable Screen shall be:

a.Shall be 304-Stainless Steel perforated plate b.Shall have a fram e around all edges of 304-Stainless Steel.

c.Perforations shall be 3/8” in diam eter.

d.Perforations shall provide a m inim um open area of 50% e.The Screen shall have lifting handles to facilitate rem oval, handles shall be 304-Stainless Steel.

The Screen and Fram e shall be designed to support a uniform debris load of 20-pounds per square foot.

g.The supports inside the box shall be designed to carry the full loaded w eight of the Screen, Fram e and D ebris w ithout dam age.

EEN

X FO

IVER

SIO

X 10A

AL N

TES - IN

STALLATIO

A.The site chosen for the installation of the Screen Box shall be in direct alignm ent w ith the Starter C oupling com ing out of D iversion Box 10A. N o bends shall be perm itted in this segm ent.

B. The site shall be cleared of all vegetation, organic m aterials, and loose soils.

C. The contractor shall verify that the elevation of the crow n of the 8-inch SD

-26 PVC

Supply Pipe to the Screen Box is a m inim um of 1-foot low er than the crow n of the Starter C oupling on D iversion Box 10A.

D.The site for the box shall be m oisture-treated and com pacted w ith appropriate equipm ent.

E.A m inim um of 4-inches of depth of either screened-rock or C lass 6 Aggregate Base C ourse (ABC

) shall be placed at the prepared site for the Screen Box.

F. All pipes (Supply, D ischarge, and D rain) betw een the D iversion Box 10A and the Screen Box, and out of the Screen Box, shall be placed on consolidated screened rock, or com pacted C lass 6 Aggregate Base C ourse.

G. In addition, all pipes shall be bedded to the crow n w ith either screened rock or C lass 6 ABC to at least 6-inches over their crow ns.

H.N ative soils, free of rocks larger than 3-inches m ay be used to com plete the backfill over all pipes.

DITCH

PRO

VEM

Know what's

SCREEN BOX PLAN AND SECTIONS

for DIVERSION BOX No. 10A on SALVATION DITCH

DETAILS

SOPRIS ENGINEERING LLC

502 MAIN STREET SUITE A3 CARBONDALE CO 81623

(970) 704 0311 soprisengineering.com

M :\2023dw gs\33191.01 - PITCO D iversion\PITCO

- Screen and Splitter\D

RAFT - Screen Box 20241105.dw g, 11/6/2024 11:39:13 AM

, Foxit PD F Editor Printer

File details come from the government source that posted it. Updated Apr 16, 2025.